A can complete a project in $20$ days and B can complete the same project in $30$ days. If A and B start working on the project together and A quits $...
Question
A can complete a project in $20$ days and B can complete the same project in $30$ days. If A and B start working on the project together and A quits $10$ days before the project is completed, in how many days will the project be completed?